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ACL 395 Operation Manual
ACL 395 Resistivity Meter
Meter is warranted for one year from the date of purchase on parts and labor.
ACL Incorporated
th
840 W. 49
Place
Chicago, IL 60609 USA
OPERATION MANUAL
Calibration is recommended every 12 months.
Page 1 of 13
Rev. 08/18/17 MKB
Tel: 847‐981‐9212
info@aclstaticide.com
www.aclstaticide.com
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Summary of Contents for ACL 395
- Page 1 ACL 395 Operation Manual Rev. 08/18/17 MKB ACL 395 Resistivity Meter OPERATION MANUAL Meter is warranted for one year from the date of purchase on parts and labor. Calibration is recommended every 12 months. ACL Incorporated Tel: 847‐981‐9212 840 W. 49 Place Page 1 of 13 info@aclstaticide.com Chicago, IL 60609 USA www.aclstaticide.com ...
- Page 2 ACL 395 Operation Manual Rev. 08/18/17 MKB ACL 395 Resistivity Meter The ACL 395 is a lightweight, pocket‐sized, auto‐ranging surface resistivity meter. It is designed to test conductive, dissipative, and insulative surfaces for electrical resistivity according to the ESDA’s parallel resistivity probe method DIN EN 100 015/1 & ASTM D257. If the meter is used with the 5‐lb probes available in the accessory kit, it will comply to IEC 61340‐4‐1, ANSI/ESDA S4.1 and ANSI/ESDA S7.1. ACL 395 Resistivity Meter includes: * Tester * Two accordion cables (stereo to banana) * 9‐volt battery * Certificate of calibration ACL 396 Accessory Kit includes: * Two 5‐lb probes * Foam‐lined carrying case Limits * Resistivity: 10 ‐10 ohms/square * Resistance: 10 ‐10 ohms * Measuring voltage: 10v and 100v ACL Incorporated Tel: 847‐981‐9212 840 W. 49 Place Page 2 of 13 info@aclstaticide.com Chicago, IL 60609 USA ...
- Page 3 ACL 395 Operation Manual Rev. 08/18/17 MKB NTRODUCTION The ACL 395 Resistivity Meter is an easy‐to‐use tester for measuring surface resistivity. When used with the ACL 396 Accessory Kit, the ACL 395 Resistivity Meter is a dependable audit kit for conductive and dissipative surfaces. This meter is designed for use in all facets of material production including engineering, maintenance, quality control, incoming inspection, manufacturing and research, or in sales departments for the testing of anti‐static mats, floor finishes, paints, wrist straps, smocks, footwear, bags and containers. When using the built‐in probes, the meter’s test values for surface resistivity are in ohms per square (although they are displayed in ohms). When using the external 5‐lb probes, the meter’s test values for resistance are in ohms. ECADE CALE 3 = 1 kilohm 4 = 10 kilohms 5 = 100 kilohms 5 3 x 10 = 300 kilohms 6 = 1 meg ohm 6 3 x 10 = ...
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Page 4: Test Voltage
ACL 395 Operation Manual Rev. 08/18/17 MKB EST OLTAGE The test voltages are 10v and 100v. According to ESD Association (ESDA) standards S4.1 and S7.1, 10v should be applied to surfaces with resistivity of less than 10 and 100v should be applied to surfaces with resistivity of 10 or greater. The ACL 395 will automatically simulate the proper voltage according to the test measurement. As defined by the ESDA, values indicate the following: Voltage Range Definition 10 volt < 10 ohms per square Conductive 100 volt – 10 ohms per square Dissipative 100 volt > 10 ohms per square Insulative ... -
Page 5: Recording Data
ACL 395 Operation Manual Rev. 08/18/17 MKB ECORDING ATA ANSI/ESDA and European CECC recognize the effect environmental conditions have on test measurements and specify in their standards that they measured and recorded. It is possible to test or manufacture a material at high humidity and pass all the test specifications, but when the customer receives the material and uses it at a lower humidity or temperature the material fails to pass the specifications. This can cause rejections and loss of product. Both ESD S4.1 ESD Protective Worksurface sections 6.2.4 and ESD S7.1‐1994 Resistive Characterization of Materials Floor Materials sections 5.2.4 and 5.3.3 require reporting of temperature and humidity at the time of testing. ALIBRATION Calibration is recommended annually. The ACL 395 meter comes with a certificate of calibration which verifies the calibration of the instrument using equipment that is traceable to National Standards and CAD‐generated techniques. Meters can be sent back to ACL Inc. for calibration for a lab fee or they can be sent to a certified calibration lab. (See page 12 for calibration instructions.) The meters also come with a CE mark approval. EASURING WITH NTERNAL ROBES The parallel resistivity probe method complies with ASTM D257. It is used to give fast electrical resistivity measurements on flat homogeneous materials. It may be used on multilayered materials, but this should be noted along with the temperature and humidity values on the data report. ... -
Page 6: External Probes
ACL 395 Operation Manual Rev. 08/18/17 MKB When the measurement is taken between the meter’s two rubber rails, the meter will indicate the surface resistivity of the material being tested. A. Prior to testing, make certain that surfaces to be tested are clean and free of contaminants. B. Allow the meter to acclimate to the atmosphere in which it will be used. Adjustment to new environmental conditions may take as long as a half hour. C. Place the meter on the desired surface to be tested. D. Press and hold the red integrated test button with approximately five pounds of applied force. The meter will display the surface resistivity. E. When using the built‐in probes, the meter’s test values for surface resistivity are in ohms per square (although they are displayed in ohms). F. The test value is indicated on the LED display. A decade will brighten to the according test value. Colors signify the test value’s function (see page 3). EASURING WITH XTERNAL ROBES ... - Page 7 ACL 395 Operation Manual Rev. 08/18/17 MKB By connecting the 5‐lb probes to the ACL 395’s sockets, it is possible to measure Resistance Point to Point (RTT), Resistance to Ground (RTG), and Volume Resistance. Using these external probes will allow compliance with various standards including ANSI/ESDA S4.1 for Worksurface – Resistance Measurements, ANSI/ESDA S7.1 Resistive Characterization of Materials – Floor Materials. When auditing is finished, unplug the cables and store probes in the protective case. Resistance Point to Point (RTT) RTT measurements can be used for the evaluation of floors, chairs, carts, work surfaces and other ESD‐controlled materials and products. Procedures vary regarding sample preparation, probe preparation and spacing of the 5‐lb probes. Select and read the correct test procedure or standard for the desired measurement. Test procedures can be purchased from www.esda.org. A. Connect one end of each banana test lead into the sockets of the meter. Connect the other end of the test coil cords into the 5‐lb probes. B. Place both probes on the material according to test procedures or standard being used. C. Press the “TEST” button and the value will be displayed on the LEDs. The meter will apply the correct voltage (10v or 100v) according to the value of what is measured. ...
- Page 8 ACL 395 Operation Manual Rev. 08/18/17 MKB N XAMPLE OF EASURING ON ISSIPATIVE LOORING Taking routine measurements of tiles coated with dissipative floor finish is a key component of proper floor maintenance. Any problems that arise with the floor will be easily detected. Keeping a record of temperature, humidity and electrical properties will provide a reference, and will point toward a blueprint of traffic patterns on the floor. Good record keeping will ensure success when developing and maintaining a maintenance program. To obtain an average measurement of a floor, map out a 4’ x 4’ section and conduct five tests (one at a time) within the square. Conduct a test for each side of the square and a final test diagonally through the center as shown in the drawing below. In each RTT test, the 5‐lb probes are placed three feet apart (36 inches). Connect the test leads to the meter. Attach a 5‐lb probe to the end of each lead and place three feet apart as indicated below. Press and hold the “TEST” button on the ACL 395 meter until a value is displayed. RTT #1 ...
- Page 9 ACL 395 Operation Manual Rev. 08/18/17 MKB (RTG) EASURING ESISTANCE TO ROUND RTG measurements can be used for the evaluation of floors, chairs, carts, work surfaces and other ESD‐controlled materials and products. Keeping a record of test results for temperature, humidity and electrical properties will provide a reference. : N XAMPLE OF EASURING ON ISSIPATIVE LOORING For Testing Resistance on Floors, S7.1 requires a minimum of five RTG tests per 5,000 sq. ft. Connect the leads for the external probes to the meter. When the cables have been plugged into the appropriate socket, the parallel probes under the meter disengage. ...
- Page 10 ACL 395 Operation Manual Rev. 08/18/17 MKB : N XAMPLE OF EASURING ON ISSIPATIVE ABLE A. To test RTG on a workstation, connect the first lead to the meter and to a 5‐lb probe. Place the probe on the work surface. Connect the second lead to the meter and to a groundable point (RTGP). B. To attach lead to RTGP, slip the alligator clip to the lead and connect it to the ground snap or connect the banana plug to a common point ground plug: b. Press the “TEST” button and the value will be displayed on the LED. While performing test, do not touch lead wires or probe. Avoid overlapping of lead wires. This will ensure accurate readings. c. Resistance values are in ohms. When recording test values also make note of the temperature and humidity, as the environment can affect test results. To Ground ...
- Page 11 ACL 395 Operation Manual Rev. 08/18/17 MKB Volume Resistance Measurement Volume Resistance measures the electrical path through a material. A. Connect one end of each of the banana test leads into the sockets of the meter. Connect the other end of the test coil cords into the 5‐lb probes. B. Place sample material on a conductive metal plate (such as stainless steel). Place one of the 5‐lb probes onto the material so that the material is sandwiched between the probe and metal plate. (See below) C. Place the second 5‐lb probe on the conductive metal plate. D. Press the “TEST” button and the value will be displayed on the LED. Volume Resistance is measured in ohms‐cm. ...
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Page 12: Calibration Instructions
ACL 395 Operation Manual Rev. 08/18/17 MKB ALIBRATION NSTRUCTIONS This meter should be calibrated every twelve months. To verify if the tester is within specification, a test resistance can be applied across the parallel bars using a resistance decade box. Calibration can be obtained by contacting ACL Incorporated. PECIFICATIONS Dimensions: 70mm x 130mm x 35mm (approximate) Weight: 103 grams (approximate) Power: Battery‐operated PP3 9‐volt Connections: 2 x 3.5mm jack plug for earth connection 3 12+ Test Range: to 10 5 9 Dissipative Range: ... -
Page 13: Test Equipment
ACL 395 Operation Manual Rev. 08/18/17 MKB EST QUIPMENT * Resistance Decade Box * Test Leads The resistance decade box required will need a range of from 1 kilohm (10 ) to 999 meg ohms ). Measurements greater than 10 can be calculated using CAD‐generated techniques, as high resistances greater than 10 are difficult to verify with a test voltage of 9 volts unless 1% 10 resistors are used. If using a decade box with resistors in the upper range (10 – 10 ), resistors must be 1%. Connect the test leads from the resistance decade box to the test probes of the meter, set the decade box to the desired resistance i.e. 10 = 1 K, then press and hold the meter’s test button. The 10 LED should light, 10 K 10 LED should light and so on. To measure the changeover point between decades, increase the resistance of the decade box while pressing the meter’s test button. Record the resistance when the next LED lights permanently (this is the changeover resistance). Example: The first green LED is illuminated 10 = 1 kilohm. At 3 or 4 kilohms, 10 LED is illuminated. The changeover point is 3 or 4 kilohms. 10 = 10 kilohms so between 3 or 4 kilohms and 30 or 40 kilohms will be the changeover points from 10 to 10 . Please note that the meter has no internal parts to adjust, so verification of calibration can be achieved by using the above process. If verification cannot be achieved the unit should be returned to the supplier.
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